Visceral fat, distinct from subcutaneous fat, can be present in lean individuals and is dangerous due to its inflammatory properties.

“so that's why we have sometimes the Obesity Paradox where we have people who are obese but their risk of disease seems to be normal those tend to be people that don't have these um ectopic and visceral stores and conversely you have you know lean people who at least on the outside look lean but on the inside they're quite fat and and behold their risk of disease is much higher as is their inflammation”